We see the same DIY paint repairs go wrong in the same five ways. Every single one is avoidable. Here's the list.
1. Using the wrong paint code
Two shades of "silver" from the same manufacturer can look identical in the showroom and completely different on a repair. If your code says LA7W and you buy LA7V, the repair will stand out in sunlight.
Fix: Find the code on your door jamb, engine bay or VIN label. If you're unsure, our paint code guide shows exact locations. We'll only ship a bottle matched to the code you provide.
2. Skipping surface prep
Paint bonds to clean, dry, slightly-scuffed surfaces. It does not bond to wax, grease, road grime, or loose rust. If you dab paint on a dirty chip, it'll flake within weeks.
Fix: Wash the panel. Wipe the chip with isopropyl alcohol. If rusty, scuff lightly with 2000-grit before painting.
3. Using the cap brush
The brush attached to the bottle cap is too big, too floppy, and holds too much paint for a 3 mm chip. It creates blobs that never level out.
Fix: Use a toothpick, a fine artist's brush, or the applicator tip we include. Work in thin coats.
4. Applying one thick coat instead of many thin ones
A thick coat of touch-up paint takes forever to dry, sinks as it cures, and often cracks. Thin layers flash off quickly and stack up flush.
Fix: 2–4 thin coats, 10–15 minutes apart. Each coat should fill the chip a little more. Aim to finish just below the surrounding paint level — the clear coat fills the rest.
5. Skipping the clear coat
Modern car paint is two layers: base colour + glossy clear. If you apply only colour, the repair shows up as a matte patch next to the shiny paint around it — even if the colour is perfect.
Fix: Always finish with 1–2 coats of clear. Every FixyPaint kit includes it. Let cure 48 hours, then polish for the final blend.
Bonus mistake: impatience
If there's one theme through all five, it's rushing. Touch-up paint isn't hard — it just takes time. Full cure is usually 48–72 hours before you can polish or wash the area. Drive the car gently until then.
Get the right starting point
Half the battle is starting with an exact-match bottle. Our touch-up paint is hand-mixed to your factory code — no guessing, no "close enough".